$OpenBSD: patch-kdesu_process_cpp,v 1.10 2008/08/26 16:52:29 espie Exp $
--- kdesu/process.cpp.orig	Tue Aug 19 20:18:14 2008
+++ kdesu/process.cpp	Thu Aug 21 00:02:14 2008
@@ -492,8 +492,13 @@ int PtyProcess::waitForChild()
 
     while (1) 
     {
-        FD_SET(m_Fd, &fds);
-        int ret = select(m_Fd+1, &fds, 0L, 0L, 0L);
+	int ret = 0;
+
+ 	if (m_Fd != -1)
+ 	{
+ 	    FD_SET(m_Fd, &fds);
+ 	    ret = select(m_Fd+1, &fds, 0L, 0L, 0L);
+ 	}
         if (ret == -1) 
         {
             if (errno != EINTR) 
